#include<bits/stdc++.h>
using namespace std;
#define all(x) (x).begin(),(x).end()
#define rall(x) (x).rbegin(),(x).rend()
const int N=2e5+10;
#define INF 0x3f3f3f3f;
typedef long long int ll;
#define close(); std::ios::sync_with_stdio(false);cin.tie(0),cout.tie(0);
//----------------------------------------------------------------------------//

void solve()
{
	int x,y;
	cin>>x>>y;
	if(x==0&&y==0) cout<<0<<'\n';
	else
	{
		int a=sqrt(x*x+y*y);
		//cout<<"test:a "<<a<<'\n';
		if(a*a==x*x+y*y) cout<<1<<'\n';
		else cout<<2<<'\n';
	}
	
}

int main()
{
	close();
	int T; cin>>T;
	while (T--) solve();
	return 0;
}